How to write a TOR to a designer for the development of vector controls for the FT800 panel?

Question

User interface

Hello.
Introduction.
There is a task to write TK for the designer. The essence of the work: to develop controls for the FT800 panel. Control elements for visualization of technological processes (elements of mnemonic diagrams: pumps, sensors, valves, valves, heaters, etc., trends, diagrams, etc.). Graphical controls will be used on panels with different resolutions, so we settled on vector graphics. At the same time, it is necessary that a compromise be observed between the performance of the panel and the visual perception of the elements (visual appeal, animation).
Question
How to correctly form the requirements for the designer so that the performance requirements for the panel are taken into account? How to correctly formulate performance criteria for the panel so that they are measurable.
I would be grateful if at least tell me where to dig and what materials can be studied on this issue.
Thank you.